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      <h1>Gulp案例-文件压缩</h1>
      <p>分别压缩HTML,CSS,JavaScript</p>
      <p>压缩HTML---gulp-htmlmin</p>
      <p>压缩JS---gulp-uglify</p>
      <p>压缩CSS---gulp-clean-css</p>
      <p>gulp-if----用于判断是什么类型</p>
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